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SN54F520, SN74F520 8-BIT IDENTITY COMPARATORS
SDFS081A - MARCH 1987 - REVISED OCTOBER 1993
* * *
Compares Two 8-Bit Words 20-k Pullup Resistors on Q Inputs Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs
SN54F520 . . . J PACKAGE SN74F520 . . . DW OR N PACKAGE (TOP VIEW)
description
These identity comparators perform comparisons on two 8-bit binary or BCD words. They provide P = Q outputs. The F520 features 20-k pullup termination resistors on the Q inputs for analog or switch data. The SN54F520 is characterized for operation over the full military temperature range of - 55C to 125C. The SN74F520 is characterized for operation from 0C to 70C.
FUNCTION TABLE INPUTS P, Q P=Q PQ X OE L X H OUTPUT P=Q L H H
OE P0 Q0 P1 Q1 P2 Q2 P3 Q3 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC P=Q Q7 P7 Q6 P6 Q5 P5 Q4 P4
SN54F520 . . . FK PACKAGE (TOP VIEW)
P1 Q1 P2 Q2 P3
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
P=Q Q7 P7 Q6 P6 Q5
1 OE P0 P1 P2 P3 P4 P5 P6 P7 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 2 4 6 8 11 13 15 17 3 5 7 9 12 14 16 18 7 7 0 0
COMP
P
1P = Q
19
P=Q
Q
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright (c) 1993, Texas Instruments Incorporated
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
Q3 GND P4 Q4 P5
logic symbol
Q0 P0 OE VCC
2-1
SN54F520, SN74F520 8-BIT IDENTITY COMPARATORS
SDFS081A - MARCH 1987 - REVISED OCTOBER 1993
logic diagram (positive logic)
P7 Q7 17
18
P6 Q6
15
16
P5 Q5
13
14
P4 Q4
11
12 19 P=Q
P3 Q3
8
9
P2 Q2
6
7
P1 Q1
4
5
P0 Q0
2
3
OE
1
NOTE: 20-k pullup resistors are on the Q inputs.
2-2
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
SN54F520, SN74F520 8-BIT IDENTITY COMPARATORS
SDFS081A - MARCH 1987 - REVISED OCTOBER 1993
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 1.2 V to 7 V Input current range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 30 mA to 5 mA Voltage range applied to any output in the high state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.5 V to VCC Current into any output in the low state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mA Operating free-air temperature range: SN54F520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55C to 125C SN74F520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0C to 70C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65C to 150C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: The input voltage ratings may be exceeded provided the input current ratings are observed.
recommended operating conditions
SN54F520 MIN VCC VIH VIL IIK IOH IOL TA Supply voltage High-level input voltage Low-level input voltage Input clamp current High-level output current Low-level output current Operating free-air temperature - 55 4.5 2 0.8 - 18 -1 20 125 0 NOM 5 MAX 5.5 SN74F520 MIN 4.5 2 0.8 - 18 -1 20 70 NOM 5 MAX 5.5 UNIT V V V mA mA mA C
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VOH VOL II IIH IIL OE and P inputs Q inputs OE and P inputs Q inputs OE and P inputs Q inputs VCC = 4.5 V, VCC = 4.5 V, VCC = 4.75 V, VCC = 4.5 V, VCC = 5 5 V 5.5 VCC = 5 5 V 5.5 V, VCC = 5 5 V 5.5 V, TEST CONDITIONS II = - 18 mA IOH = - 1 mA IOH = - 1 mA IOL = 20 mA VI = 7 V VI = 5.5 V VI = 2 7 V 2.7 VI = 0 5 V 0.5 MIN SN54F520 TYP MAX - 1.2 2.5 3.4 0.3 0.5 0.1 0.1 20 - 0.3 - 0.6 -1 2.5 2.7 0.3 0.5 0.1 0.1 20 - 0.3 - 0.6 -1 - 150 32 3.4 MIN SN74F520 TYP MAX - 1.2 UNIT V V V mA A mA mA mA mA
IOS VCC = 5.5 V, VO = 0 - 60 - 150 - 60 ICC VCC = 5.5 V, See Note 2 21 32 21 All typical values are at VCC = 5 V, TA = 25C. Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second. NOTE 2: ICC is measured with all inputs at 4.5 V.
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
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SN54F520, SN74F520 8-BIT IDENTITY COMPARATORS
SDFS081A - MARCH 1987 - REVISED OCTOBER 1993
switching characteristics (see Note 3)
VCC = 5 V, CL = 50 pF, RL = 500 , TA = 25C F520 MIN tPLH tPHL tPLH tPHL P or Q OE P=Q P=Q 3.9 4.7 3.5 5.2 TYP 5.7 7 4.6 7.5 MAX 7.7 9.3 5.8 9.5 VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 , TA = MIN to MAX SN54F520 MIN 3.7 4.4 3.4 4.9 MAX 10.2 11.3 7 11.2 SN74F520 MIN 3.7 4.4 3.4 4.9 MAX 8.7 10.3 6.4 10.4 ns ns
PARAMETER
FROM (INPUT)
TO (OUTPUT)
UNIT
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. NOTE 3: Load circuits and waveforms are shown in Section 1.
2-4
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
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Copyright (c) 1998, Texas Instruments Incorporated

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